--- /f/ecos/packages/io/common/current/include/devtab.h	Fri Nov 24 15:49:04 2000
+++ /f/io/common/current/include/devtab.h	Tue Jan 22 11:27:10 2002
@@ -143,6 +143,7 @@ typedef struct cyg_devtab_entry {
     Cyg_ErrNo        (*lookup)(struct cyg_devtab_entry **tab, 
                                struct cyg_devtab_entry *sub_tab,
                                const char *name);
+    void             (*shutdown)(cyg_io_handle_t handle);		/* shutdown device is possbile */
     void              *priv;
     unsigned long     status;
 } CYG_HAL_TABLE_TYPE cyg_devtab_entry_t;
@@ -160,10 +161,24 @@ cyg_devtab_entry_t _l CYG_HAL_TABLE_ENTR
    _handlers,                                                           \
    _init,                                                               \
    _lookup,                                                             \
+   NULL,                                                                \
    _priv,                                                               \
    CYG_DEVTAB_STATUS_CHAR                                               \
 };
 
+#define CHAR_DEVTAB_ENTRY_WITH_SHUTDOWN(_l,_name,_dep_name,_handlers,_init,_lookup,_shutdown,_priv)  \
+cyg_devtab_entry_t _l CYG_HAL_TABLE_ENTRY(devtab) = {                   \
+   _name,                                                               \
+   _dep_name,                                                           \
+   _handlers,                                                           \
+   _init,                                                               \
+   _lookup,                                                             \
+   _shutdown,                                                           \
+   _priv,                                                               \
+   CYG_DEVTAB_STATUS_CHAR                                               \
+};
+
+
 #define BLOCK_DEVTAB_ENTRY(_l,_name,_dep_name,_handlers,_init,_lookup,_priv)  \
 cyg_devtab_entry_t _l CYG_HAL_TABLE_ENTRY(devtab) = {                   \
    _name,                                                               \
@@ -171,13 +186,30 @@ cyg_devtab_entry_t _l CYG_HAL_TABLE_ENTR
    _handlers,                                                           \
    _init,                                                               \
    _lookup,                                                             \
+   NULL,                                                                \
    _priv,                                                               \
    CYG_DEVTAB_STATUS_BLOCK                                              \
 };
 
+#define BLOCK_DEVTAB_ENTRY_WITH_SHUTDOWN(_l,_name,_dep_name,_handlers,_init,_lookup,_shutdown,_priv)  \
+cyg_devtab_entry_t _l CYG_HAL_TABLE_ENTRY(devtab) = {                   \
+   _name,                                                               \
+   _dep_name,                                                           \
+   _handlers,                                                           \
+   _init,                                                               \
+   _lookup,                                                             \
+   _shutdown,                                                           \
+   _priv,                                                               \
+   CYG_DEVTAB_STATUS_BLOCK                                              \
+};
+
+
 #define DEVTAB_ENTRY(_l,_name,_dep_name,_handlers,_init,_lookup,_priv) \
         CHAR_DEVTAB_ENTRY(_l,_name,_dep_name,_handlers,_init,_lookup,_priv)
 
+#define DEVTAB_ENTRY_WITH_SHUTDOWN(_l,_name,_dep_name,_handlers,_init,_lookup,_shutdown,_priv) \
+        CHAR_DEVTAB_ENTRY(_l,_name,_dep_name,_handlers,_init,_lookup,_shutdown,_priv)
+
 
 #define DEVTAB_ENTRY_NO_INIT(_l,_name,_dep_name,_handlers,_init,_lookup,_priv)  \
 cyg_devtab_entry_t _l = {                                                       \
@@ -186,6 +218,7 @@ cyg_devtab_entry_t _l = {               
    _handlers,                                                                   \
    _init,                                                                       \
    _lookup,                                                                     \
+   NULL,                                                                        \
    _priv,                                                                       \
    CYG_DEVTAB_STATUS_CHAR                                                       \
 };


--- /f/ecos/packages/io/common/current/include/io.h	Sat Aug 26 01:33:26 2000
+++ /f/io/common/current/include/io.h	Tue Jan 22 11:35:12 2002
@@ -66,6 +66,8 @@ typedef void *cyg_io_handle_t;
 // Lookup a device and return it's handle
 Cyg_ErrNo cyg_io_lookup(const char *name, 
                         cyg_io_handle_t *handle);
+// shutdown a device
+Cyg_ErrNo cyg_io_shutdown(cyg_io_handle_t handle);
 // Write data to a device
 Cyg_ErrNo cyg_io_write(cyg_io_handle_t handle, 
                        const void *buf, 


--- /f/ecos/packages/io/common/current/src/iosys.c	Fri Nov 24 15:49:04 2000
+++ /f/io/common/current/src/iosys.c	Tue Jan 22 11:40:48 2002
@@ -146,6 +146,20 @@ cyg_io_lookup(const char *name, cyg_io_h
 }
 
 //
+// 'shutdown' a device
+//
+
+Cyg_ErrNo cyg_io_shutdown(cyg_io_handle_t handle)
+{
+    cyg_devtab_entry_t *t = (cyg_devtab_entry_t *)handle;
+    // Validate request
+    if (!t->handlers->shutdown) {
+        return -EDEVNOSUPP;
+    }
+    return t->handlers->write(handle);	
+}
+
+//
 // 'write' data to a device.
 //